TWI442991B - Air suction lock screw device - Google Patents

Description

Air suction lock screw device

The invention relates to a lock screw device, in particular to an air suction lock screw device.

Screws are one of the most commonly used fixing components in various devices, and the more precise the object, the more screw-fitted screw holes are needed for the locking combination, and when the repair is needed, the relevant device or object can be loosened by the screw. Overhaul. In the process of automated production, the automatic locking screw mechanism is usually used to perform the corresponding locking screw action to increase the production efficiency, such as "AUTOMATIC SCREW TIGHTENING APPARATUS" of US Patent Publication No. 20120067176, which discloses an automatic locking screw. In its specification, the mechanism discloses a structure for attracting a screw to a screwdriver by means of air attraction, which mainly uses a gap between a driver and a screw holder to form a gas. The approach channel uses the gas suction method to attract the screw to the screwdriver to achieve the purpose of automatically locking the screw.

However, in the above structure, when the screw is attracted to the screwdriver by means of gas suction, there is no guarantee that the screw can be combined with the screwdriver at a vertical angle. If there is a slight skew, the screw is difficult to lock. The degree increases, affecting the yield of the lock. In addition, in the field of micro-size (less than 2mm) automatic locking screw mechanism, the accuracy requirement is more strict, as long as there is a slight micro-locking error, it will cause the problem that the locking cannot be fixed. Furthermore, when the screw is attached to the screwdriver, if the screwdriver starts to rotate slightly, the screw will be opened, and the screw can not be fixed, resulting in low productivity, due to the above-mentioned US patent. The gap between the screwdriver and the screw holder must be used to form the gas suction path, so that the sway of the screwdriver during rotation is inevitable, while the micro-sized screw locks. In this case, such a screw lock sway problem is not allowed.

The main object of the present invention is to solve the problem that in the micro-sized air-suction type screw lock, the screw driver is likely to be shaken when rotating due to the gap, thereby causing the screw to be opened or locked inaccurately.

In order to achieve the above object, the present invention provides an air suction type locking screw device for sucking a screw and performing a locking connection. The air suction type locking screw device comprises a power driving member and a screw fixedly connected with the power driving member. a driver, a positioning fixing component coupled to the power driving member, and a gas attracting member. The power driving member provides a rotary power, the screwdriver includes a connecting portion fixedly connected to the power driving member, an extending portion, and a screw locking portion disposed at an end of the extending portion away from the connecting portion, the screw locking portion having a Along from the contact end of the extension, the contact end is in fixed contact with the screw. The positioning fixing assembly includes a receiving housing for receiving the screwdriver, a suction opening disposed on the receiving housing, and a damping portion corresponding to the contact end, the damping portion having a screw for the screw a through hole through which the lock portion passes and at least one abutting portion contacting the screw lock portion to prevent the screw lock from shaking, and at least one air gap connecting the air suction opening between the vibration damping portion and the screw lock portion . The gas attracting member is connected to the air guiding opening, and the screw is sucked through the air gap through the air gap to suck the screw, and the screw is fixedly contacted with the contact end.

As can be seen from the above description, the present invention has the following features:

1. While the gas attracting member uses the air gap to hold the screw, the abutting section design on the vibration damping portion can also be utilized to effectively reduce the sloshing problem that the screwdriver is prone to when rotating.

Second, it is suitable for micro-size automatic screw locking, avoiding the screw from opening from the contact end due to vibration, and also making the screw can be accurately locked in the predetermined position.

10‧‧‧Power Drives

20‧‧‧ Screwdriver

21‧‧‧ Connection section

22‧‧‧Extension

23‧‧‧ screw lock

231‧‧‧Contact end

24‧‧‧ gas approach

30‧‧‧ Positioning fixed components

31‧‧‧ housing housing

311‧‧‧ air suction opening

32‧‧‧Combination connector

321‧‧‧First Abutment

322‧‧‧Perforation

323‧‧‧Auxiliary positioning bearing

33‧‧‧Extended positioning parts

331‧‧‧Second Abutment

332‧‧‧Sleeve

34, 34a‧‧‧ Vibration Reduction Department

341‧‧‧through hole

342‧‧‧Attendance

343‧‧‧ Depression

40‧‧‧ gas attracting parts

50‧‧‧ screws

60‧‧‧ air gap

70‧‧‧Flexible parts

FIG. 1 is a schematic perspective view of the present invention.

2 is a perspective exploded view of the present invention.

Figure 3 is a schematic cross-sectional view of the present invention.

4A is a schematic view showing the three-dimensional structure of the screwdriver of the present invention.

4B is a perspective, partially enlarged view of FIG. 4A.

Fig. 5 is a schematic end elevational view showing the screwdriver and the damper portion according to the first embodiment of the present invention.

Figure 6 is a schematic end elevational view of a screwdriver and a vibration damping portion in accordance with a second embodiment of the present invention.

The detailed description and technical content of the present invention will now be described as follows:

Please refer to FIG. 1 , FIG. 2 and FIG. 3 , the present invention is an air suction type locking screw device for sucking a screw 50 and performing a locking connection. The air suction type locking screw device The utility model comprises a power driving component 10, a screwdriver 20 fixedly connected to the power driving component 10, a positioning fixing component 30 connected to the power driving component 10, and a gas suction component 40. The power driver 10 provides rotational power. The screwdriver 20 includes a connecting portion 21 fixedly coupled to the power driving member 10, an extending portion 22, and a screw portion disposed at an end of the extending portion 22 away from the connecting portion 21. 23, the screw portion 23 has a contact end 231 away from the extension 22, and the contact end 231 is in fixed contact with the screw 50. The positioning and fixing assembly 30 includes a receiving housing 31 for receiving the screwdriver 20, a suction opening 311 disposed on the receiving housing 31, and a damping portion 34 corresponding to the contact end 231. The damper portion 34 has a through hole 341 through which the screw lock portion 23 passes, and at least one abutting portion 342 contacting the screw lock portion 23 to prevent the screw driver 20 from shaking, and the damper portion 34 and the screw lock portion At least one air gap 60 communicating with the air suction opening 311 is formed between the portions 23. The gas suction member 40 is connected to the air suction opening 311, and the gas is sucked through the air gap 60 through the air gap 60 to suck the screw 50, and the screw 50 is fixedly contacted with the contact end 231.

Please refer to FIG. 2 and FIG. 3 for further details. The positioning fixing assembly 30 further includes a combined connecting member 32 connected to the receiving housing 31 away from the end of the power driving member 10, and An extension locating member 33 that is coupled to the combination connector 32. Since the screwdriver 20 must be replaced according to the size of the screw 50 used, it must be combined and positioned by a structure that can be easily disassembled. In this embodiment, after the combination connector 32 and the housing 31 are disassembled, The screwdriver 20 can be replaced by a screw driver 20 suitable for use in the extension positioning member 33, and the extension positioning member 33 is placed in the combination connector 32 together with the screwdriver 20, and then The receiving housing 31 is combined for positioning. The combination connector 32 has a first abutting portion 321 and a through hole 322 away from the end of the receiving housing 31. The extending positioning member 33 has a second corresponding to the first abutting portion 321 . An abutting portion 331 and a sleeve portion 332 passing through the through hole 322, the sleeve portion 332 is provided for the extending portion 22 of the screwdriver 20 and the screw portion 23, and the damping portion 34 is disposed on the sleeve portion 332 The sleeve portion 332 is away from one end of the accommodating case 31. Thereby, the extension positioning member 33 is stably connected to the accommodating case 31 by the combination connecting member 32, and the connecting portion 21 of the screwdriver 20 is connected with the power driving member 10, on the other hand, The screw portion 23 of the screwdriver 20 transmits the damper portion 34 provided on the extension holder 33 to reduce the problem of sway during rotation. In addition, the combined connecting member 32 further has an auxiliary positioning bearing 323 fixedly connected with the extending portion 22 of the screwdriver 20, and by the arrangement of the auxiliary positioning bearing 323, on the one hand, the frictional force of the rotation is reduced, and the other is reduced. The arrangement of the auxiliary positioning bearing 323 can also increase the stability of the screwdriver 20 when it is rotated. Furthermore, an elastic member 70 can be disposed in the accommodating case 31, and the elastic member 70 can abut against the accommodating case 31 and the auxiliary positioning bearing 323 to enhance the movement of the device. Buffering ability.

Referring to FIG. 4A and FIG. 4B, the contact end 231 of the screwdriver 20 has a cross shape for fixed contact with the screw 50, thereby driving the screw 50 to be rotationally locked, and the screwdriver 20 has a plurality of The air channel 24 is formed in the screw portion 23, and the air channel 24 extends from the contact end 231 toward the connecting portion 21, and a groove is formed on the outer surface of the screw portion 23. As shown in FIG. 5, the diameter of the through hole 341 is equal to the outer diameter of the screw portion 23, thereby bringing the screw portion 23 into contact with the abutting portion 342, and the air guiding passages 24 and the abutting portion A plurality of air gaps 60 are formed between 342. In the present embodiment, the air guide channels 24 have four and are disposed 90 degrees apart from the screwdriver 20, respectively. The air gap 60 communicates with the air suction opening 311 (shown in FIG. 3), and the gas suction member 40 passes through the air gap 60 to attract the screw 50. At the same time, the rotation of the screwdriver 20 and the function of the suction screw 50 are avoided.

In addition, please refer to FIG. 6 , which is another way of providing an air gap 60 . The damper portion 34 a has a plurality of abutting segments 342 and a plurality of recessed segments 343 disposed between the abutting segments 342 . The air gap 60 is formed between the recessed portion 343 and the screw portion 23 (shown in FIG. 4A). In this embodiment, the recessed segments 343 have four, and the screwdrivers are respectively used. 20 is disposed at a central interval of 90 degrees, whereby the arrangement of the air guiding passages 24 is not required to be performed on the screw locking portion 23, and only the recessed portions 343 need to be disposed on the damping portion 34a, and the abutting portions are provided. The segments 342 are in contact with the screw lock portion 23, and the recessed segments 343 form a plurality of air gaps 60 with the screw lock portion 23.

In summary, the present invention has the following features:

1. While the gas attracting member uses the air gap to hold the screw, the abutting section design on the vibration damping portion can also be utilized to effectively reduce the sloshing problem that the screwdriver is prone to when rotating.

Second, it is suitable for micro-size automatic screw locking, avoiding the screw from opening from the contact end due to vibration, and also making the screw can be accurately locked in the predetermined position.

3. The air gaps are formed by the air guiding channels provided on the screw locking portion or the concave segments on the vibration damping portion, and have the characteristics of simple design and convenient manufacture.

4. Using the auxiliary positioning bearing and the design of the abutting section, respectively positioning the extension of the screwdriver and the screw locking portion to prevent the sway angle of the screwdriver when rotating, thereby affecting the correctness of the locking.

Therefore, the present invention is highly progressive and conforms to the requirements of the invention patent application, and the application is filed according to law, and the praying office grants the patent as soon as possible.

The present invention has been described in detail above, but the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the scope of the invention. That is, the equivalent changes and modifications made by the scope of the present application should remain within the scope of the patent of the present invention.

10‧‧‧Power Drives

20‧‧‧ Screwdriver

21‧‧‧ Connection section

22‧‧‧Extension

23‧‧‧ screw lock

31‧‧‧ housing housing

311‧‧‧ air suction opening

32‧‧‧Combination connector

321‧‧‧First Abutment

322‧‧‧Perforation

33‧‧‧Extended positioning parts

331‧‧‧Second Abutment

332‧‧‧Sleeve

34‧‧‧ Vibration Reduction Department

341‧‧‧through hole

70‧‧‧Flexible parts

Claims (8)

An air suction type locking screw device for sucking a screw and performing a locking connection, the air suction type locking screw device comprises:
a power drive member that provides rotational power;
a screwdriver that is fixedly coupled to the power drive member, includes a connecting portion fixedly coupled to the power driving member, an extending portion, and a screw portion disposed at an end of the extending portion away from the connecting portion, the screw locking portion having a contact end that is away from the extension end, the contact end is in fixed contact with the screw;
a positioning fixing component connected to the power driving component, comprising: a receiving shell for receiving the screwdriver, a gas suction opening disposed on the receiving shell; and a vibration damping portion corresponding to the contact end, The damper portion has a through hole through which the screw lock portion passes and at least one abutting portion contacting the screw lock portion to prevent the screw lock driver from shaking, and at least one connection between the damper portion and the screw lock portion is formed An air gap of the air suction opening; and a gas suction member connected to the air suction opening, the gas suction member is sucked through the air gap through the air gap to suck the screw, and the screw is attracted Fixed contact with the contact end. The air suction type locking screw device according to claim 1, wherein the screwdriver has a plurality of air guiding passages formed on the screw locking portion, and the plurality of gas is formed between the air guiding passage and the abutting portion. Gap. The air suction type locking screw device of claim 2, wherein the air guiding channel has four and is disposed 90 degrees apart from the screwdriver. The air suction type locking screw device of claim 1, wherein the damper portion has a plurality of abutting sections and a plurality of recessed sections disposed between the abutting sections, the recessed sections and the threaded portion A plurality of the air gaps are formed therebetween. The air suction type locking screw device according to claim 4, wherein the recessed sections have four and are respectively disposed at intervals of 90 degrees centered on the screwdriver. The air suction type locking screw device of claim 1, wherein the positioning fixing assembly further comprises a combined connecting member connected to the receiving housing away from an end of the power driving member, the combined connecting member for the screw After the driver is placed, the positioning is combined with the housing. The air suction type locking screw device of claim 6, wherein the combination connecting member further has an auxiliary positioning bearing fixedly coupled to the extension of the screwdriver. The air suction type locking screw device of claim 6, wherein the positioning and fixing assembly further has an extending positioning member coupled to the combined connecting member, the combined connecting member having a first abutting portion and a The extension positioning member has a second abutting portion corresponding to the first abutting portion and a sleeve portion passing through the through hole, the sleeve portion is provided for the screw The extension portion of the screwdriver and the screw locking portion are disposed, and the damping portion is disposed at an end of the sleeve portion away from the receiving housing.